ASTM A220M-88(1993)e1

1.1 This specification covers pearlitic malleable irons for castings for general engineering usage at temperatures from normal ambient to approximately 400°C.

1.1.1 For continuous service at temperatures up to 650°C design factors should be incorporated to compensate for possible property changes, as demonstrated by Marshall and Sommer, and by Pearson.

1.2 Without knowledge of casting geometry and process details, no quantitative relationship can be stated between the properties of the iron in the various locations of a casting and those of a test bar cast from the same iron.

1.3 This specification is the metric companion of Specification A220. The values stated in SI units and are to be regarded as the standard.